<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>

<body>
    <p>
        <label for="">用户名：</label>
        <input type="text" class="user">
    </p>
    <p>
        <label for="">密码</label>
        <input class="pwd" type="text">
    </p>
    <button class="btn">登录</button>
</body>

</html>